{"id":"RLSA-2021:3816","summary":"Important: httpd:2.4 security update","details":"The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.\n\nSecurity Fix(es):\n\n* httpd: mod_proxy: SSRF via a crafted request uri-path containing \"unix:\" (CVE-2021-40438)\n\n* httpd: mod_session: Heap overflow via a crafted SessionHeader value (CVE-2021-26691)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-02-04T14:45:04.165750Z","published":"2021-10-12T15:53:03Z","upstream":["CVE-2021-26691","CVE-2021-40438"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2021:3816"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1966732"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2005117"}],"affected":[{"package":{"name":"httpd","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/httpd?distro=rocky-linux-8-4-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.4.37-39.module+el8.4.0+571+fd70afb1"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:3816.json"}},{"package":{"name":"mod_http2","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/mod_http2?distro=rocky-linux-8-4-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.15.7-3.module+el8.4.0+553+7a69454b"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:3816.json"}},{"package":{"name":"mod_http2","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/mod_http2?distro=rocky-linux-8-5-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.15.7-3.module+el8.5.0+695+1fa8055e"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:3816.json"}},{"package":{"name":"mod_md","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/mod_md?distro=rocky-linux-8&epoch=1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.0.8-8.module+el8.5.0+695+1fa8055e"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:3816.json"}},{"package":{"name":"mod_md","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/mod_md?distro=rocky-linux-8-4-legacy&epoch=1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.0.8-8.module+el8.4.0+553+7a69454b"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:3816.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}